The Stable channel has been updated to 54.0.2840.79 (Platform version: 8743.76.0) for all Chrome OS devices except HP Chromebook 13 G1, Acer Chromebook 14 for Work and Thinkpad 13 Chromebook. This build contains a number of bug fixes, security updates, and feature enhancements. Systems will be receiving updates over the next several days.

Some highlights of these changes are:

New Alt-Tab UI when switching between windows

Quick View feature in Files App to preview files

New setting opt-in to show Input Method menu on shelf

Read only policy for external USB/SD storage devices

UI improvements for user removal from the start screen

Security Fixes:Note: Access to bug details and links may be kept restricted until a majority of users are updated with a fix. We will also retain restrictions if the bug exists in a third party library that other projects similarly depend on, but haven’t yet fixed.[657609] High CVE-2016-5195 Race condition in copy-on-write breakage of private read-only memory mappings

If you find new issues, please let us know by visiting our forum or filing a bug. Interested in switching channels? Find out how. You can submit feedback using ‘Report an issue...’ in the Chrome menu (3 vertical dots in the upper right corner of the browser).

... there is still an old Flash-version with a serious secutity issue installed:

https://helpx.adobe.com/security/products/flash-player/apsb16-36.html

--> fixed in version 23.0.0.205

Flash-version in the firmware: 23.0.0.185r1

Well, I had to deactivate Adobe Flash some weeks ago because of a previous serious security issue so there is no chance to use Flash content anymore because of Google's bad Flash updating policy in Chrome OS.Perhaps it would be better to remove Flash completely from ChromeOS because its versions are insecure most of the time so they cannot be used (even if there are updates for Google Chrome's desktop versions!).

There is another displaying issue as for the login manager:

After booting the Chromebook at first the user's names are displayed and after that the pictures. It might be an annoying animation which should be removed with the next firmware update.

What happened to the standard zoom? The address bar now looks horribly clunky and I had to set my default zoom to 80% so that the fonts did not look as though the letters were put in by a child. Ie: the lower case E's sat higher than all other letter with their tops pulled up. I'm not sure what caused this.

Avoid this release! It's horrible. The crashing that has become common on my Chrome OS devices has gotten even worse, and web apps do no accept keyboard input (mouse only) suddenly. Common on Google- this isn't canary or alpha.

The Alt-Search is a nice UI improvement, but it duplicates the dedicated "switch windows" function key of a Chromebook.(above 6)

The usage pattern between looking at files in Google Drive, and looking at local files using the file manager on a Chromebook is increasing diverging and confusing. Could you please try to make looking at files locally on a Chromebook (Alt-Shift-M) similar, to what happens on Google drive, cause you know, they are both core Google products.